25079287501 has 2 divisors, whose sum is σ = 25079287502. Its totient is φ = 25079287500.

The previous prime is 25079287489. The next prime is 25079287511. The reversal of 25079287501 is 10578297052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22993173225 + 2086114276 = 151635^2 + 45674^2 .

It is a cyclic number.

It is not a de Polignac number, because 25079287501 - 2⁹ = 25079286989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25079287511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12539643750 + 12539643751.

It is an arithmetic number, because the mean of its divisors is an integer number (12539643751).

Almost surely, 2^25079287501 is an apocalyptic number.

It is an amenable number.

25079287501 is a deficient number, since it is larger than the sum of its proper divisors (1).

25079287501 is an equidigital number, since it uses as much as digits as its factorization.

25079287501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 46.

The spelling of 25079287501 in words is "twenty-five billion, seventy-nine million, two hundred eighty-seven thousand, five hundred one".