403640244350425 has 6 divisors (see below), whose sum is σ = 500513902994558. Its totient is φ = 322912195480320.

The previous prime is 403640244350377. The next prime is 403640244350477. The reversal of 403640244350425 is 524053442046304.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6531520707856 + 397108723642569 = 2555684^2 + 19927587^2 .

It is not a de Polignac number, because 403640244350425 - 2²³ = 403640235961817 is a prime.

It is a super-2 number, since 2×403640244350425² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8072804886984 + ... + 8072804887033.

Almost surely, 2^{403640244350425} is an apocalyptic number.

It is an amenable number.

403640244350425 is a deficient number, since it is larger than the sum of its proper divisors (96873658644133).

403640244350425 is a wasteful number, since it uses less digits than its factorization.

403640244350425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16145609774027 (or 16145609774022 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 46.

Adding to 403640244350425 its reverse (524053442046304), we get a palindrome (927693686396729).

The spelling of 403640244350425 in words is "four hundred three trillion, six hundred forty billion, two hundred forty-four million, three hundred fifty thousand, four hundred twenty-five".