40025137253 has 4 divisors (see below), whose sum is σ = 40531784640. Its totient is φ = 39518489868.

The previous prime is 40025137241. The next prime is 40025137259. The reversal of 40025137253 is 35273152004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40025137253 - 2⁴ = 40025137237 is a prime.

It is a super-2 number, since 2×40025137253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025137259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253323575 + ... + 253323732.

It is an arithmetic number, because the mean of its divisors is an integer number (10132946160).

Almost surely, 2^40025137253 is an apocalyptic number.

It is an amenable number.

40025137253 is a deficient number, since it is larger than the sum of its proper divisors (506647387).

40025137253 is an equidigital number, since it uses as much as digits as its factorization.

40025137253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506647386.

The product of its (nonzero) digits is 25200, while the sum is 32.

Adding to 40025137253 its reverse (35273152004), we get a palindrome (75298289257).

The spelling of 40025137253 in words is "forty billion, twenty-five million, one hundred thirty-seven thousand, two hundred fifty-three".