25220256452 has 24 divisors (see below), whose sum is σ = 44823051000. Its totient is φ = 12414887936.

The previous prime is 25220256437. The next prime is 25220256469. The reversal of 25220256452 is 25465202252.

It can be written as a sum of positive squares in 4 ways, for example, as 941630596 + 24278625856 = 30686^2 + 155816^2 .

It is a super-2 number, since 2×25220256452² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69077 + ... + 234972.

It is an arithmetic number, because the mean of its divisors is an integer number (1867627125).

Almost surely, 2^25220256452 is an apocalyptic number.

It is an amenable number.

25220256452 is a deficient number, since it is larger than the sum of its proper divisors (19602794548).

25220256452 is a wasteful number, since it uses less digits than its factorization.

25220256452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304375 (or 304373 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 25220256452 in words is "twenty-five billion, two hundred twenty million, two hundred fifty-six thousand, four hundred fifty-two".