25461253146 has 32 divisors (see below), whose sum is σ = 58386746880. Its totient is φ = 7250944176.

The previous prime is 25461253133. The next prime is 25461253151. The reversal of 25461253146 is 64135216452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 974436 + ... + 1000223.

It is an arithmetic number, because the mean of its divisors is an integer number (1824585840).

Almost surely, 2^25461253146 is an apocalyptic number.

25461253146 is an abundant number, since it is smaller than the sum of its proper divisors (32925493734).

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

25461253146 is a wasteful number, since it uses less digits than its factorization.

25461253146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974978.

The product of its digits is 172800, while the sum is 39.

Adding to 25461253146 its reverse (64135216452), we get a palindrome (89596469598).

The spelling of 25461253146 in words is "twenty-five billion, four hundred sixty-one million, two hundred fifty-three thousand, one hundred forty-six".