42899025 has 48 divisors (see below), whose sum is σ = 79744896. Its totient is φ = 20190720.

The previous prime is 42899011. The next prime is 42899053. The reversal of 42899025 is 52099824.

It is not a de Polignac number, because 42899025 - 2¹¹ = 42896977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon 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, 21469 + ... + 23381.

It is an arithmetic number, because the mean of its divisors is an integer number (1661352).

Almost surely, 2^42899025 is an apocalyptic number.

It is an amenable number.

42899025 is a deficient number, since it is larger than the sum of its proper divisors (36845871).

42899025 is a wasteful number, since it uses less digits than its factorization.

42899025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 42899025 is about 6549.7347274527. The cubic root of 42899025 is about 350.0653619427.

The spelling of 42899025 in words is "forty-two million, eight hundred ninety-nine thousand, twenty-five".