25345352550 has 96 divisors (see below), whose sum is σ = 74959345152. Its totient is φ = 5541338880.

The previous prime is 25345352533. The next prime is 25345352623. The reversal of 25345352550 is 5525354352.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25345352499 and 25345352508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 500599 + ... + 548898.

It is an arithmetic number, because the mean of its divisors is an integer number (780826512).

Almost surely, 2^25345352550 is an apocalyptic number.

25345352550 is an abundant number, since it is smaller than the sum of its proper divisors (49613992602).

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

25345352550 is a wasteful number, since it uses less digits than its factorization.

25345352550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049542 (or 1049537 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 39.

The spelling of 25345352550 in words is "twenty-five billion, three hundred forty-five million, three hundred fifty-two thousand, five hundred fifty".