20025450025 has 24 divisors (see below), whose sum is σ = 28639307840. Its totient is φ = 13605744960.

The previous prime is 20025450017. The next prime is 20025450059. The reversal of 20025450025 is 52005452002.

It is a happy number.

It is not a de Polignac number, because 20025450025 - 2³ = 20025450017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505839 + ... + 543988.

Almost surely, 2^20025450025 is an apocalyptic number.

20025450025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20025450025 is a deficient number, since it is larger than the sum of its proper divisors (8613857815).

20025450025 is a wasteful number, since it uses less digits than its factorization.

20025450025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049953 (or 1049948 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 20025450025 in words is "twenty billion, twenty-five million, four hundred fifty thousand, twenty-five".