425348421 has 16 divisors (see below), whose sum is σ = 601348800. Its totient is φ = 266675328.

The previous prime is 425348419. The next prime is 425348437. The reversal of 425348421 is 124843524.

425348421 = T₁₃₄ + T₁₃₅ + ... + T₁₃₆₆.

It is not a de Polignac number, because 425348421 - 2¹ = 425348419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425348401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19426 + ... + 35043.

It is an arithmetic number, because the mean of its divisors is an integer number (37584300).

Almost surely, 2^425348421 is an apocalyptic number.

It is an amenable number.

425348421 is a deficient number, since it is larger than the sum of its proper divisors (176000379).

425348421 is a wasteful number, since it uses less digits than its factorization.

425348421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54628.

The product of its digits is 30720, while the sum is 33.

The square root of 425348421 is about 20623.9768473493. The cubic root of 425348421 is about 752.0527003253.

The spelling of 425348421 in words is "four hundred twenty-five million, three hundred forty-eight thousand, four hundred twenty-one".