42145431025 has 12 divisors (see below), whose sum is σ = 54062415900. Its totient is φ = 32553711680.

The previous prime is 42145430993. The next prime is 42145431043. The reversal of 42145431025 is 52013454124.

It can be written as a sum of positive squares in 6 ways, for example, as 176172529 + 41969258496 = 13273^2 + 204864^2 .

It is not a de Polignac number, because 42145431025 - 2⁵ = 42145430993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29065090 + ... + 29066539.

It is an arithmetic number, because the mean of its divisors is an integer number (4505201325).

Almost surely, 2^42145431025 is an apocalyptic number.

It is an amenable number.

42145431025 is a deficient number, since it is larger than the sum of its proper divisors (11916984875).

42145431025 is a wasteful number, since it uses less digits than its factorization.

42145431025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58131668 (or 58131663 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 42145431025 its reverse (52013454124), we get a palindrome (94158885149).

The spelling of 42145431025 in words is "forty-two billion, one hundred forty-five million, four hundred thirty-one thousand, twenty-five".