40349925 has 144 divisors (see below), whose sum is σ = 96100992. Its totient is φ = 15667200.

The previous prime is 40349873. The next prime is 40349929. The reversal of 40349925 is 52994304.

It is not a de Polignac number, because 40349925 - 2⁶ = 40349861 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40349925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40349929) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 294457 + ... + 294593.

It is an arithmetic number, because the mean of its divisors is an integer number (667368).

Almost surely, 2^40349925 is an apocalyptic number.

40349925 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40349925 is an abundant number, since it is smaller than the sum of its proper divisors (55751067).

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

40349925 is a wasteful number, since it uses less digits than its factorization.

40349925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 40349925 is about 6352.1590817611. The cubic root of 40349925 is about 342.9895675215.

The spelling of 40349925 in words is "forty million, three hundred forty-nine thousand, nine hundred twenty-five".