25651226552 has 32 divisors (see below), whose sum is σ = 56307575520. Its totient is φ = 10725250560.

The previous prime is 25651226539. The next prime is 25651226561. The reversal of 25651226552 is 25562215652.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

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, 5583773 + ... + 5588364.

It is an arithmetic number, because the mean of its divisors is an integer number (1759611735).

Almost surely, 2^25651226552 is an apocalyptic number.

It is an amenable number.

25651226552 is an abundant number, since it is smaller than the sum of its proper divisors (30656348968).

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

25651226552 is a wasteful number, since it uses less digits than its factorization.

25651226552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11172191 (or 11172187 counting only the distinct ones).

The product of its digits is 360000, while the sum is 41.

The spelling of 25651226552 in words is "twenty-five billion, six hundred fifty-one million, two hundred twenty-six thousand, five hundred fifty-two".