45187425 has 36 divisors (see below), whose sum is σ = 81381820. Its totient is φ = 23967360.

The previous prime is 45187421. The next prime is 45187463. The reversal of 45187425 is 52478154.

It can be written as a sum of positive squares in 6 ways, for example, as 4124961 + 41062464 = 2031^2 + 6408^2 .

It is not a de Polignac number, because 45187425 - 2² = 45187421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45187425.

It is not an unprimeable number, because it can be changed into a prime (45187421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51087 + ... + 51963.

Almost surely, 2^45187425 is an apocalyptic number.

45187425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45187425 is a deficient number, since it is larger than the sum of its proper divisors (36194395).

45187425 is a wasteful number, since it uses less digits than its factorization.

45187425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1114 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 45187425 is about 6722.1592513120. The cubic root of 45187425 is about 356.1824618044.

The spelling of 45187425 in words is "forty-five million, one hundred eighty-seven thousand, four hundred twenty-five".