25112209020 has 48 divisors (see below), whose sum is σ = 70779867648. Its totient is φ = 6652238400.

The previous prime is 25112209019. The next prime is 25112209021. The reversal of 25112209020 is 2090221152.

It is an interprime number because it is at equal distance from previous prime (25112209019) and next prime (25112209021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112209021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376824 + ... + 1394943.

It is an arithmetic number, because the mean of its divisors is an integer number (1474580576).

Almost surely, 2^25112209020 is an apocalyptic number.

25112209020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25112209020 is an abundant number, since it is smaller than the sum of its proper divisors (45667658628).

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

25112209020 is a wasteful number, since it uses less digits than its factorization.

25112209020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771930 (or 2771928 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 25112209020 in words is "twenty-five billion, one hundred twelve million, two hundred nine thousand, twenty".