40425951 has 4 divisors (see below), whose sum is σ = 53901272. Its totient is φ = 26950632.

The previous prime is 40425943. The next prime is 40426003. The reversal of 40425951 is 15952404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40425951 - 2³ = 40425943 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 (40425251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6737656 + ... + 6737661.

It is an arithmetic number, because the mean of its divisors is an integer number (13475318).

Almost surely, 2^40425951 is an apocalyptic number.

40425951 is a deficient number, since it is larger than the sum of its proper divisors (13475321).

40425951 is a wasteful number, since it uses less digits than its factorization.

40425951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13475320.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 40425951 is about 6358.1405300607. The cubic root of 40425951 is about 343.2048489189.

The spelling of 40425951 in words is "forty million, four hundred twenty-five thousand, nine hundred fifty-one".