25973697501 has 12 divisors (see below), whose sum is σ = 37556213760. Its totient is φ = 17297959560.

The previous prime is 25973697473. The next prime is 25973697517. The reversal of 25973697501 is 10579637952.

25973697501 is a `hidden beast` number, since 2 + 5 + 9 + 73 + 69 + 7 + 501 = 666.

It is not a de Polignac number, because 25973697501 - 2¹⁰ = 25973696477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25973696501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477341 + ... + 1494818.

It is an arithmetic number, because the mean of its divisors is an integer number (3129684480).

Almost surely, 2^25973697501 is an apocalyptic number.

It is an amenable number.

25973697501 is a deficient number, since it is larger than the sum of its proper divisors (11582516259).

25973697501 is a wasteful number, since it uses less digits than its factorization.

25973697501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973136 (or 2973133 counting only the distinct ones).

The product of its (nonzero) digits is 3572100, while the sum is 54.

The spelling of 25973697501 in words is "twenty-five billion, nine hundred seventy-three million, six hundred ninety-seven thousand, five hundred one".