42421205612525 has 48 divisors (see below), whose sum is σ = 54794552174208. Its totient is φ = 32552437632000.

The previous prime is 42421205612509. The next prime is 42421205612537. The reversal of 42421205612525 is 52521650212424.

It is not a de Polignac number, because 42421205612525 - 2⁴ = 42421205612509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35186864 + ... + 36372486.

It is an arithmetic number, because the mean of its divisors is an integer number (1141553170296).

Almost surely, 2^{42421205612525} is an apocalyptic number.

It is an amenable number.

42421205612525 is a deficient number, since it is larger than the sum of its proper divisors (12373346561683).

42421205612525 is a wasteful number, since it uses less digits than its factorization.

42421205612525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186262 (or 1186257 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 42421205612525 its reverse (52521650212424), we get a palindrome (94942855824949).

The spelling of 42421205612525 in words is "forty-two trillion, four hundred twenty-one billion, two hundred five million, six hundred twelve thousand, five hundred twenty-five".