42525997377 has 16 divisors (see below), whose sum is σ = 59634759168. Its totient is φ = 26918461440.

The previous prime is 42525997373. The next prime is 42525997411. The reversal of 42525997377 is 77379952524.

It is a happy number.

It is not a de Polignac number, because 42525997377 - 2² = 42525997373 is a prime.

It is a super-2 number, since 2×42525997377² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42525997377.

It is not an unprimeable number, because it can be changed into a prime (42525997373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4308928 + ... + 4318785.

It is an arithmetic number, because the mean of its divisors is an integer number (3727172448).

Almost surely, 2^42525997377 is an apocalyptic number.

It is an amenable number.

42525997377 is a deficient number, since it is larger than the sum of its proper divisors (17108761791).

42525997377 is a wasteful number, since it uses less digits than its factorization.

42525997377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8627800.

The product of its digits is 33339600, while the sum is 60.

The spelling of 42525997377 in words is "forty-two billion, five hundred twenty-five million, nine hundred ninety-seven thousand, three hundred seventy-seven".