25105050400 has 72 divisors (see below), whose sum is σ = 62127406404. Its totient is φ = 9904435200.

The previous prime is 25105050361. The next prime is 25105050401. The reversal of 25105050400 is 405050152.

It can be written as a sum of positive squares in 6 ways, for example, as 6266938896 + 18838111504 = 79164^2 + 137252^2 .

It is not an unprimeable number, because it can be changed into a prime (25105050401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156541 + ... + 273340.

Almost surely, 2^25105050400 is an apocalyptic number.

25105050400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25105050400 is an abundant number, since it is smaller than the sum of its proper divisors (37022356004).

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

25105050400 is a wasteful number, since it uses less digits than its factorization.

25105050400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429974 (or 429961 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The spelling of 25105050400 in words is "twenty-five billion, one hundred five million, fifty thousand, four hundred".