20425251325 has 24 divisors (see below), whose sum is σ = 26187173120. Its totient is φ = 15787180800.

The previous prime is 20425251289. The next prime is 20425251347. The reversal of 20425251325 is 52315252402.

It is not a de Polignac number, because 20425251325 - 2¹³ = 20425243133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

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, 458437 + ... + 501013.

Almost surely, 2^20425251325 is an apocalyptic number.

20425251325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20425251325 is a deficient number, since it is larger than the sum of its proper divisors (5761921795).

20425251325 is a wasteful number, since it uses less digits than its factorization.

20425251325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43237 (or 43232 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 20425251325 in words is "twenty billion, four hundred twenty-five million, two hundred fifty-one thousand, three hundred twenty-five".