1253679525 has 168 divisors, whose sum is σ = 2758347264. Its totient is φ = 552873600.

The previous prime is 1253679461. The next prime is 1253679571. The reversal of 1253679525 is 5259763521.

1253679525 is a `hidden beast` number, since 1 + 2 + 53 + 6 + 79 + 525 = 666.

It is not a de Polignac number, because 1253679525 - 2⁶ = 1253679461 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 3954667 + ... + 3954983.

Almost surely, 2^1253679525 is an apocalyptic number.

1253679525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253679525 is an abundant number, since it is smaller than the sum of its proper divisors (1504667739).

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

1253679525 is an equidigital number, since it uses as much as digits as its factorization.

1253679525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 363 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 1253679525 is about 35407.3371633621. The cubic root of 1253679525 is about 1078.2732824402.

The spelling of 1253679525 in words is "one billion, two hundred fifty-three million, six hundred seventy-nine thousand, five hundred twenty-five".