25553340450 has 72 divisors (see below), whose sum is σ = 74894532336. Its totient is φ = 6194748000.

The previous prime is 25553340431. The next prime is 25553340473. The reversal of 25553340450 is 5404335552.

25553340450 is a `hidden beast` number, since 25 + 553 + 3 + 40 + 45 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2576196 + ... + 2586095.

It is an arithmetic number, because the mean of its divisors is an integer number (1040201838).

Almost surely, 2^25553340450 is an apocalyptic number.

25553340450 is an abundant number, since it is smaller than the sum of its proper divisors (49341191886).

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

25553340450 is a wasteful number, since it uses less digits than its factorization.

25553340450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162320 (or 5162312 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 25553340450 in words is "twenty-five billion, five hundred fifty-three million, three hundred forty thousand, four hundred fifty".