25287360401 has 16 divisors (see below), whose sum is σ = 26244562896. Its totient is φ = 24345732096.

The previous prime is 25287360341. The next prime is 25287360409. The reversal of 25287360401 is 10406378252.

It is a happy number.

It is a Cunningham number, because it is equal to 159020²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1415565376 + 23871795025 = 37624^2 + 154505^2 .

It is a cyclic number.

It is not a de Polignac number, because 25287360401 - 2³⁰ = 24213618577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25287360409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599005 + ... + 1614741.

It is an arithmetic number, because the mean of its divisors is an integer number (1640285181).

Almost surely, 2^25287360401 is an apocalyptic number.

It is an amenable number.

25287360401 is a deficient number, since it is larger than the sum of its proper divisors (957202495).

25287360401 is a wasteful number, since it uses less digits than its factorization.

25287360401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16228.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 25287360401 in words is "twenty-five billion, two hundred eighty-seven million, three hundred sixty thousand, four hundred one".