1057495725 has 144 divisors (see below), whose sum is σ = 2323601280. Its totient is φ = 452390400.

The previous prime is 1057495721. The next prime is 1057495729. The reversal of 1057495725 is 5275947501.

1057495725 = T₄₃₀ + T₄₃₁ + ... + T₁₈₅₈.

1057495725 is a `hidden beast` number, since 1 + 0 + 5 + 74 + 9 + 572 + 5 = 666.

1057495725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1057495721) and next prime (1057495729).

It is not a de Polignac number, because 1057495725 - 2² = 1057495721 is a prime.

It is a super-2 number, since 2×1057495725² = 2236594416786551250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057495721) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 739311 + ... + 740739.

It is an arithmetic number, because the mean of its divisors is an integer number (16136120).

Almost surely, 2^1057495725 is an apocalyptic number.

1057495725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1057495725 is an abundant number, since it is smaller than the sum of its proper divisors (1266105555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1057495725 is a wasteful number, since it uses less digits than its factorization.

1057495725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The square root of 1057495725 is about 32519.1593526032. The cubic root of 1057495725 is about 1018.8092361456.

The spelling of 1057495725 in words is "one billion, fifty-seven million, four hundred ninety-five thousand, seven hundred twenty-five".