25201855497 has 16 divisors (see below), whose sum is σ = 41356891520. Its totient is φ = 13293286272.

The previous prime is 25201855463. The next prime is 25201855501. The reversal of 25201855497 is 79455810252.

It is not a de Polignac number, because 25201855497 - 2¹¹ = 25201853449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25201850497) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 46156972 + ... + 46157517.

It is an arithmetic number, because the mean of its divisors is an integer number (2584805720).

Almost surely, 2^25201855497 is an apocalyptic number.

It is an amenable number.

25201855497 is a deficient number, since it is larger than the sum of its proper divisors (16155036023).

25201855497 is a wasteful number, since it uses less digits than its factorization.

25201855497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92314512.

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 25201855497 in words is "twenty-five billion, two hundred one million, eight hundred fifty-five thousand, four hundred ninety-seven".