25165474002 has 48 divisors (see below), whose sum is σ = 56045535000. Its totient is φ = 8154971136.

The previous prime is 25165473961. The next prime is 25165474003. The reversal of 25165474002 is 20047456152.

It is a happy number.

25165474002 is a `hidden beast` number, since 25 + 165 + 474 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25011738801 + 153735201 = 158151^2 + 12399^2 .

It is not an unprimeable number, because it can be changed into a prime (25165474003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 816708 + ... + 846960.

Almost surely, 2^25165474002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25165474002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28022767500).

25165474002 is an abundant number, since it is smaller than the sum of its proper divisors (30880060998).

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

25165474002 is a wasteful number, since it uses less digits than its factorization.

25165474002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31547 (or 31544 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 25165474002 in words is "twenty-five billion, one hundred sixty-five million, four hundred seventy-four thousand, two".