42601525 has 12 divisors (see below), whose sum is σ = 52934112. Its totient is φ = 34011440.

The previous prime is 42601523. The next prime is 42601547. The reversal of 42601525 is 52510624.

It is not a de Polignac number, because 42601525 - 2¹ = 42601523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42601525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42601523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13224 + ... + 16126.

It is an arithmetic number, because the mean of its divisors is an integer number (4411176).

Almost surely, 2^42601525 is an apocalyptic number.

It is an amenable number.

42601525 is a deficient number, since it is larger than the sum of its proper divisors (10332587).

42601525 is a wasteful number, since it uses less digits than its factorization.

42601525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3500 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 42601525 is about 6526.9843725874. The cubic root of 42601525 is about 349.2542625419.

Subtracting 42601525 from its reverse (52510624), we obtain a palindrome (9909099).

The spelling of 42601525 in words is "forty-two million, six hundred one thousand, five hundred twenty-five".