25297113720 has 32 divisors (see below), whose sum is σ = 75891341520. Its totient is φ = 6745896960.

The previous prime is 25297113713. The next prime is 25297113727. The reversal of 25297113720 is 2731179252.

It is an interprime number because it is at equal distance from previous prime (25297113713) and next prime (25297113727).

It is a super-2 number, since 2×25297113720² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25297113727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105404521 + ... + 105404760.

Almost surely, 2^25297113720 is an apocalyptic number.

25297113720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25297113720 is an abundant number, since it is smaller than the sum of its proper divisors (50594227800).

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

25297113720 is a wasteful number, since it uses less digits than its factorization.

25297113720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210809295 (or 210809291 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 25297113720 in words is "twenty-five billion, two hundred ninety-seven million, one hundred thirteen thousand, seven hundred twenty".