40256425 has 48 divisors (see below), whose sum is σ = 58924800. Its totient is φ = 26956800.

The previous prime is 40256423. The next prime is 40256429. The reversal of 40256425 is 52465204.

It is not a de Polignac number, because 40256425 - 2¹ = 40256423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40256393 and 40256402.

It is not an unprimeable number, because it can be changed into a prime (40256423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369271 + ... + 369379.

It is an arithmetic number, because the mean of its divisors is an integer number (1227600).

Almost surely, 2^40256425 is an apocalyptic number.

It is an amenable number.

40256425 is a deficient number, since it is larger than the sum of its proper divisors (18668375).

40256425 is a wasteful number, since it uses less digits than its factorization.

40256425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 40256425 is about 6344.7951109551. The cubic root of 40256425 is about 342.7244342133.

The spelling of 40256425 in words is "forty million, two hundred fifty-six thousand, four hundred twenty-five".