2157307425 has 240 divisors, whose sum is σ = 5142170880. Its totient is φ = 869045760.

The previous prime is 2157307423. The next prime is 2157307433. The reversal of 2157307425 is 5247037512.

It is not a de Polignac number, because 2157307425 - 2¹ = 2157307423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2157307425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157307421) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 4238071 + ... + 4238579.

It is an arithmetic number, because the mean of its divisors is an integer number (21425712).

Almost surely, 2^2157307425 is an apocalyptic number.

2157307425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2157307425 is an abundant number, since it is smaller than the sum of its proper divisors (2984863455).

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

2157307425 is a wasteful number, since it uses less digits than its factorization.

2157307425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 2157307425 is about 46446.8236265947. The cubic root of 2157307425 is about 1292.1234631781.

The spelling of 2157307425 in words is "two billion, one hundred fifty-seven million, three hundred seven thousand, four hundred twenty-five".