71372025 has 18 divisors (see below), whose sum is σ = 127835630. Its totient is φ = 38064960.

The previous prime is 71372023. The next prime is 71372029. The reversal of 71372025 is 52027317.

71372025 = T₂₃₇₇ + T₂₃₇₈ + ... + T₂₄₀₁.

It can be written as a sum of positive squares in 3 ways, for example, as 3606201 + 67765824 = 1899^2 + 8232^2 .

It is not a de Polignac number, because 71372025 - 2¹ = 71372023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71372025.

It is not an unprimeable number, because it can be changed into a prime (71372023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 158380 + ... + 158829.

Almost surely, 2^71372025 is an apocalyptic number.

71372025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71372025 is a deficient number, since it is larger than the sum of its proper divisors (56463605).

71372025 is a wasteful number, since it uses less digits than its factorization.

71372025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317225 (or 317217 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 71372025 is about 8448.1965531112. The cubic root of 71372025 is about 414.8037490823.

The spelling of 71372025 in words is "seventy-one million, three hundred seventy-two thousand, twenty-five".