25130542628 has 6 divisors (see below), whose sum is σ = 43978449606. Its totient is φ = 12565271312.

The previous prime is 25130542627. The next prime is 25130542643. The reversal of 25130542628 is 82624503152.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25118446144 + 12096484 = 158488^2 + 3478^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25130542591 and 25130542600.

It is not an unprimeable number, because it can be changed into a prime (25130542627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3141317825 + ... + 3141317832.

It is an arithmetic number, because the mean of its divisors is an integer number (7329741601).

Almost surely, 2^25130542628 is an apocalyptic number.

It is an amenable number.

25130542628 is a deficient number, since it is larger than the sum of its proper divisors (18847906978).

25130542628 is a wasteful number, since it uses less digits than its factorization.

25130542628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282635661 (or 6282635659 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 25130542628 in words is "twenty-five billion, one hundred thirty million, five hundred forty-two thousand, six hundred twenty-eight".