1225421007 has 8 divisors (see below), whose sum is σ = 1635155760. Its totient is φ = 816316800.

The previous prime is 1225420993. The next prime is 1225421027. The reversal of 1225421007 is 7001245221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225421007 - 2⁴ = 1225420991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225421027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153082 + ... + 160887.

It is an arithmetic number, because the mean of its divisors is an integer number (204394470).

Almost surely, 2^1225421007 is an apocalyptic number.

1225421007 is a deficient number, since it is larger than the sum of its proper divisors (409734753).

1225421007 is a wasteful number, since it uses less digits than its factorization.

1225421007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315273.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 1225421007 is about 35006.0138690483. The cubic root of 1225421007 is about 1070.1100439999.

Adding to 1225421007 its reverse (7001245221), we get a palindrome (8226666228).

The spelling of 1225421007 in words is "one billion, two hundred twenty-five million, four hundred twenty-one thousand, seven".