25630220901 has 32 divisors (see below), whose sum is σ = 37454745600. Its totient is φ = 15523716096.

The previous prime is 25630220893. The next prime is 25630220921. The reversal of 25630220901 is 10902203652.

It is not a de Polignac number, because 25630220901 - 2³ = 25630220893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25630220921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186175 + ... + 293123.

It is an arithmetic number, because the mean of its divisors is an integer number (1170460800).

Almost surely, 2^25630220901 is an apocalyptic number.

It is an amenable number.

25630220901 is a deficient number, since it is larger than the sum of its proper divisors (11824524699).

25630220901 is a wasteful number, since it uses less digits than its factorization.

25630220901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107133.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 25630220901 in words is "twenty-five billion, six hundred thirty million, two hundred twenty thousand, nine hundred one".