263220631367425 has 24 divisors (see below), whose sum is σ = 347383843897176. Its totient is φ = 197162762403840.

The previous prime is 263220631367411. The next prime is 263220631367479. The reversal of 263220631367425 is 524763136022362.

It can be written as a sum of positive squares in 12 ways, for example, as 80746111261456 + 182474520105969 = 8985884^2 + 13508313^2 .

It is not a de Polignac number, because 263220631367425 - 2¹³ = 263220631359233 is a prime.

It is a super-2 number, since 2×263220631367425² (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 23 ways as a sum of consecutive naturals, for example, 1604432644 + ... + 1604596693.

It is an arithmetic number, because the mean of its divisors is an integer number (14474326829049).

Almost surely, 2^{263220631367425} is an apocalyptic number.

263220631367425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263220631367425 is a deficient number, since it is larger than the sum of its proper divisors (84163212529751).

263220631367425 is a wasteful number, since it uses less digits than its factorization.

263220631367425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209029557 (or 3209029552 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 52.

Adding to 263220631367425 its reverse (524763136022362), we get a palindrome (787983767389787).

The spelling of 263220631367425 in words is "two hundred sixty-three trillion, two hundred twenty billion, six hundred thirty-one million, three hundred sixty-seven thousand, four hundred twenty-five".