40125537774 has 72 divisors (see below), whose sum is σ = 101691881928. Its totient is φ = 11401054560.

The previous prime is 40125537743. The next prime is 40125537779. The reversal of 40125537774 is 47773552104.

40125537774 is a `hidden beast` number, since 40 + 1 + 2 + 5 + 537 + 7 + 74 = 666.

It is a super-2 number, since 2×40125537774² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125537779) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33969 + ... + 285315.

It is an arithmetic number, because the mean of its divisors is an integer number (1412387249).

Almost surely, 2^40125537774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40125537774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50845940964).

40125537774 is an abundant number, since it is smaller than the sum of its proper divisors (61566344154).

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

40125537774 is a wasteful number, since it uses less digits than its factorization.

40125537774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251550 (or 251540 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 40125537774 in words is "forty billion, one hundred twenty-five million, five hundred thirty-seven thousand, seven hundred seventy-four".