42969025 has 48 divisors (see below), whose sum is σ = 61746048. Its totient is φ = 29376000.

The previous prime is 42969023. The next prime is 42969077. The reversal of 42969025 is 52096924.

42969025 = 683² + 684² + ... + 764².

It is not a de Polignac number, because 42969025 - 2¹ = 42969023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42969023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417124 + ... + 417226.

It is an arithmetic number, because the mean of its divisors is an integer number (1286376).

Almost surely, 2^42969025 is an apocalyptic number.

It is an amenable number.

42969025 is a deficient number, since it is larger than the sum of its proper divisors (18777023).

42969025 is a wasteful number, since it uses less digits than its factorization.

42969025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 42969025 is about 6555.0762772068. The cubic root of 42969025 is about 350.2556635408.

The spelling of 42969025 in words is "forty-two million, nine hundred sixty-nine thousand, twenty-five".