925640247 has 16 divisors (see below), whose sum is σ = 1413600512. Its totient is φ = 527774400.

The previous prime is 925640237. The next prime is 925640257. The reversal of 925640247 is 742046529.

It is an interprime number because it is at equal distance from previous prime (925640237) and next prime (925640257).

It is not a de Polignac number, because 925640247 - 2¹⁴ = 925623863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (925640207) 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, 38629 + ... + 57822.

It is an arithmetic number, because the mean of its divisors is an integer number (88350032).

Almost surely, 2^925640247 is an apocalyptic number.

925640247 is a deficient number, since it is larger than the sum of its proper divisors (487960265).

925640247 is a wasteful number, since it uses less digits than its factorization.

925640247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96918.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 925640247 is about 30424.3364266174. The cubic root of 925640247 is about 974.5723294638.

The spelling of 925640247 in words is "nine hundred twenty-five million, six hundred forty thousand, two hundred forty-seven".