1253719725 has 12 divisors (see below), whose sum is σ = 2072816736. Its totient is φ = 668650480.

The previous prime is 1253719711. The next prime is 1253719777. The reversal of 1253719725 is 5279173521.

It is not a de Polignac number, because 1253719725 - 2⁶ = 1253719661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8358057 + ... + 8358206.

It is an arithmetic number, because the mean of its divisors is an integer number (172734728).

Almost surely, 2^1253719725 is an apocalyptic number.

1253719725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1253719725 is a deficient number, since it is larger than the sum of its proper divisors (819097011).

1253719725 is a wasteful number, since it uses less digits than its factorization.

1253719725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716276 (or 16716271 counting only the distinct ones).

The product of its digits is 132300, while the sum is 42.

The square root of 1253719725 is about 35407.9048377619. The cubic root of 1253719725 is about 1078.2848074809.

The spelling of 1253719725 in words is "one billion, two hundred fifty-three million, seven hundred nineteen thousand, seven hundred twenty-five".