20372400426025 has 24 divisors (see below), whose sum is σ = 25690425395040. Its totient is φ = 16021383077760.

The previous prime is 20372400426023. The next prime is 20372400426031. The reversal of 20372400426025 is 52062400427302.

It is a happy number.

It is not a de Polignac number, because 20372400426025 - 2¹ = 20372400426023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20372400426023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109923237 + ... + 110108413.

It is an arithmetic number, because the mean of its divisors is an integer number (1070434391460).

Almost surely, 2^{20372400426025} is an apocalyptic number.

20372400426025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20372400426025 is a deficient number, since it is larger than the sum of its proper divisors (5318024969015).

20372400426025 is a wasteful number, since it uses less digits than its factorization.

20372400426025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259833 (or 259828 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 37.

The spelling of 20372400426025 in words is "twenty trillion, three hundred seventy-two billion, four hundred million, four hundred twenty-six thousand, twenty-five".