251020025201432 has 32 divisors (see below), whose sum is σ = 471112113561600. Its totient is φ = 125390172762144.

The previous prime is 251020025201423. The next prime is 251020025201447. The reversal of 251020025201432 is 234102520020152.

It is a happy number.

It is a super-2 number, since 2×251020025201432² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251020025201395 and 251020025201404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42381119 + ... + 47939537.

It is an arithmetic number, because the mean of its divisors is an integer number (14722253548800).

Almost surely, 2^{251020025201432} is an apocalyptic number.

It is an amenable number.

251020025201432 is a deficient number, since it is larger than the sum of its proper divisors (220092088360168).

251020025201432 is a wasteful number, since it uses less digits than its factorization.

251020025201432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563815 (or 5563811 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 251020025201432 its reverse (234102520020152), we get a palindrome (485122545221584).

The spelling of 251020025201432 in words is "two hundred fifty-one trillion, twenty billion, twenty-five million, two hundred one thousand, four hundred thirty-two".