40025493972 has 18 divisors (see below), whose sum is σ = 101175554298. Its totient is φ = 13341831312.

The previous prime is 40025493953. The next prime is 40025493973. The reversal of 40025493972 is 27939452004.

40025493972 is a `hidden beast` number, since 4 + 0 + 0 + 2 + 549 + 39 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39714112656 + 311381316 = 199284^2 + 17646^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025493973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555909603 + ... + 555909674.

Almost surely, 2^40025493972 is an apocalyptic number.

It is an amenable number.

40025493972 is an abundant number, since it is smaller than the sum of its proper divisors (61150060326).

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

40025493972 is a wasteful number, since it uses less digits than its factorization.

40025493972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111819287 (or 1111819282 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 40025493972 in words is "forty billion, twenty-five million, four hundred ninety-three thousand, nine hundred seventy-two".