1225402351 has 2 divisors, whose sum is σ = 1225402352. Its totient is φ = 1225402350.

The previous prime is 1225402327. The next prime is 1225402361. The reversal of 1225402351 is 1532045221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225402351 - 2⁵ = 1225402319 is a prime.

It is a super-2 number, since 2×1225402351² = 3003221843672654402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225402361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612701175 + 612701176.

It is an arithmetic number, because the mean of its divisors is an integer number (612701176).

Almost surely, 2^1225402351 is an apocalyptic number.

1225402351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225402351 is an equidigital number, since it uses as much as digits as its factorization.

1225402351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1225402351 is about 35005.7473995343. The cubic root of 1225402351 is about 1070.1046134651.

Adding to 1225402351 its reverse (1532045221), we get a palindrome (2757447572).

The spelling of 1225402351 in words is "one billion, two hundred twenty-five million, four hundred two thousand, three hundred fifty-one".