25252425252 has 18 divisors (see below), whose sum is σ = 63832519478. Its totient is φ = 8417475072.

The previous prime is 25252425241. The next prime is 25252425283.

25252425252 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 18372718116 + 6879707136 = 135546^2 + 82944^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×25252425252² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 701456257 = 25252425252 / (2 + 5 + 2 + 5 + 2 + 4 + 2 + 5 + 2 + 5 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350728093 + ... + 350728164.

Almost surely, 2^25252425252 is an apocalyptic number.

It is an amenable number.

25252425252 is an abundant number, since it is smaller than the sum of its proper divisors (38580094226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25252425252 is a wasteful number, since it uses less digits than its factorization.

25252425252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701456267 (or 701456262 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The spelling of 25252425252 in words is "twenty-five billion, two hundred fifty-two million, four hundred twenty-five thousand, two hundred fifty-two".