40525031025 has 72 divisors (see below), whose sum is σ = 76050278304. Its totient is φ = 21390220800.

The previous prime is 40525031021. The next prime is 40525031081. The reversal of 40525031025 is 52013052504.

It is a happy number.

40525031025 is a `hidden beast` number, since 4 + 0 + 52 + 503 + 102 + 5 = 666.

It is not a de Polignac number, because 40525031025 - 2² = 40525031021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40525031025.

It is not an unprimeable number, because it can be changed into a prime (40525031021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 554890 + ... + 623660.

Almost surely, 2^40525031025 is an apocalyptic number.

40525031025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40525031025 is a deficient number, since it is larger than the sum of its proper divisors (35525247279).

40525031025 is an equidigital number, since it uses as much as digits as its factorization.

40525031025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68893 (or 68876 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 40525031025 its reverse (52013052504), we get a palindrome (92538083529).

The spelling of 40525031025 in words is "forty billion, five hundred twenty-five million, thirty-one thousand, twenty-five".