40142025 has 108 divisors (see below), whose sum is σ = 91516464. Its totient is φ = 16632000.

The previous prime is 40142023. The next prime is 40142029. The reversal of 40142025 is 52024104.

40142025 = 881² + 882² + ... + 929².

It is not a de Polignac number, because 40142025 - 2¹ = 40142023 is a prime.

It is a super-2 number, since 2×40142025² = 3222764342201250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40141989 and 40142007.

It is not an unprimeable number, because it can be changed into a prime (40142021) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 121110 + ... + 121440.

Almost surely, 2^40142025 is an apocalyptic number.

40142025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40142025 is an abundant number, since it is smaller than the sum of its proper divisors (51374439).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40142025 is a wasteful number, since it uses less digits than its factorization.

40142025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40142025 is about 6335.7734334491. The cubic root of 40142025 is about 342.3994767776.

Adding to 40142025 its reverse (52024104), we get a palindrome (92166129).

The spelling of 40142025 in words is "forty million, one hundred forty-two thousand, twenty-five".