25057194660 has 72 divisors (see below), whose sum is σ = 77141291136. Its totient is φ = 6582185280.

The previous prime is 25057194637. The next prime is 25057194689. The reversal of 25057194660 is 6649175052.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1026796 + ... + 1050915.

Almost surely, 2^25057194660 is an apocalyptic number.

25057194660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25057194660 is an abundant number, since it is smaller than the sum of its proper divisors (52084096476).

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

25057194660 is a wasteful number, since it uses less digits than its factorization.

25057194660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077793 (or 2077788 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 25057194660 in words is "twenty-five billion, fifty-seven million, one hundred ninety-four thousand, six hundred sixty".